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umock_c is a C mocking library.

• Clone umock_c by:

git clone --recursive https://github.com/Azure/umock-c.git

• Create a cmake folder under the root of umock-c

• Switch to the cmake folder and run

cmake ..

If you would like to use installed (by CMake) versions of packages already on your machine:

cmake -Duse_installed=ON ../

• Build the code for your platform (msbuild for Windows, make for Linux, etc.) by executing in the cmake folder:

cmake --build .

cmake -Duse_installed=ON ../

On Linux:

sudo make install

On Windows:

msbuild /m INSTALL.vcxproj

This requires that ctest and testrunnerswitcher are both installed (through CMake) on your machine.

In order to build the tests use the run_unittests cmake option:

cmake .. -Drun_unittests:bool=ON

Ever wanted to write something like this in C as a test?

TEST_FUNCTION(my_first_test)
{
    // arrange
    STRICT_EXPECTED_CALL(test_dependency_1_arg(42))
        .SetReturn(44)
        .IgnoreAllArguments();

    // act
    int result = function_under_test();

    // assert
    ASSERT_ARE_EQUAL(int, 44, result);
    ASSERT_ARE_EQUAL(char_ptr, umock_c_get_expected_calls(), umock_c_get_actual_calls());
}

umock_c has way more features than this simple example!

• umock_c uses ctest as test runner (https://github.com/Azure/azure-ctest.git). ctest is a C test runner that can be run on many platforms as it does not make use of compiler/platform specific code and thus it is easily portable.
• umock_c uses cmake (https://cmake.org/) to generate build files.
• umock_c uses testrunnerswitcher to allow switching between ctest and CppUnitTest for Windows.

Complete documentation is available here.